Physics Programs & Projects

NIST provides the national reference for the calibration of neutron radiation detectors and for neutron personnel dosimeters.  more

A new calibration service for 14 MeV neutron generators is being developed.   The calibrations may be done at NIST or at a customer site, … more

A new free-air ionization chamber has been built to eventually replace the Wyckoff-Attix chamber, which has been used at NIST as a primary x-ray … more

Spectrometry measurements in the x-ray calibration ranges have been undertaken using a high-resolution HPGe detector both in the direct beam and … more

Research is underway to expand the current range (20 Gy to 200 kGy) of alanine dosimetry to include therapy level dosimetry (as low as 1 Gy) for … more

A bilateral comparison was conducted between NIST and the International Atomic Energy Agency (IAEA) to support international efforts for … more

NIST has nearly five decades of experience in the development of critically evaluated, comprehensive databases of cross-section information for … more

NIST is participating in Task Group # 138 (TG-138) of the American Association of Physicists in Medicine (AAPM), AAPM Recommendations on Assessing … more

A new laboratory dedicated to establishing a national primary air-kerma rate standard for Xoft's AXXENT™ miniature x-ray source has … more

The Radiation and Biomolecular Physics Division's accelerator facilities continue to support a broad range of research efforts in the areas of … more

The Dosimetry Group designs, fabricates, and calibrates bent-crystal optics and diagnostic spectrometers for customers around the world. more

Graphene, a one-atom thick sheet of carbon, shows great promise as a material for building nanometer-scale electronic devices that would help to … more

Theory is being developed and used to devise methods for preserving and exploiting the quantum behavior of ever-larger systems and finding … more

The quantum optics of light interacting with semiconductor-based nanostructures is being studied to extend concepts of entanglement and coherence … more

Nanoscale theory of the electronic, optical and mechanical properties of ultrasmall structures, devices and their dynamical operation and the … more